Mysterious Powder

Lab Report

Tests

Iodine

The first test we ran was the mysterious powder with iodine to see if the powder had starch in it. When we mixed the powder with the iodine the liquid turned a blackish/brownish color,so the test was a positive test.To the right is a picture of a positive test of the mysterious powder and the iodine.

pH

The second test we ran was the pH test. We wanted to run this test to see what the pH of the mysterious powder was.When we put the litmus paper in the liquid the paper turned a light green/yellow color. When we compared the color to the colors on the pH scale the color was pretty close between 8 and 9. We thought the color was the closest to 8. To the right is a picture of what the pH color looked like of the mysterious powder.

Vinegar

The third test we ran was the mysterious powder with vinegar to see if it would make a chemical reaction.When we put the vinegar in it made a chemical reaction.The liquid was bubbling and fizzing for 20 seconds. Then when the bubbling and fizzing stopped the liquid hardened. To the right is a picture of the liquid after the chemical reaction.

PR

The last test we ran was the mysterious powder with PR to see if the powder is a acid.When we put in the PR the liquid turned a pink color, so the mysterious powder is not a acid. To the right is a picture of a negative test with the PR.

Our Results/Conclusion

In our group we think that the mysterious powder is a combination of three powders.We think they are red, green, and purple. We think there is red in the powder because when we looked at the physical properties table we saw that there was a snow like powder in the mysterious powder. We think there is green in the powder because when we observed the physical properties we saw that green was a whit color that looked like it had a little yellow color in it.We saw the same thing in the mysterious powder. We think there is purple in the powder because when we looked at the physical properties there was clear crystal dots in the mysterious powder.